Aperiodic biomimetic Vogel spirals as diffractive optical elements for tailored light distribution in functional polymer layers
Aperiodic biomimetic Vogel spirals as diffractive optical elements for tailored light distribution in functional polymer layers
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DOI：
10.1088/2040-8986/abf8cc
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发表时间：
2021-04
影响因子：
2.1
通讯作者：
M. Merkel;T. Schemme;C. Denz
中科院分区：
文献类型：
--
作者：
M. Merkel;T. Schemme;C. Denz
仿生的，确定性的非周期性的黄金角Vogel螺旋缺乏平移和旋转对称性，并在傅立叶空间中表现出圆对称的散射环。我们提出了一种通用的和低成本的方法无掩模制作的Vogel螺旋浮雕光栅的照明光致抗蚀剂与激光复杂结构的使用空间光调制器和随后的转移到聚合物层通过复制成型的负。我们研究其衍射特性，并作为一个应用程序，其实施作为一个表面结构，导致在有机太阳能电池的效率提高了18%。
The biomimetic, deterministic aperiodic golden angle Vogel spiral lacks both translational and rotational symmetry and exhibits circularly symmetric scattering rings in Fourier space. We present a versatile and low cost method for maskless fabrication of a Vogel spiral relief grating by illumination of a photoresist with laser light complexly structured using a spatial light modulator and subsequent transfer of its negative into a polymer layer via replica molding. We investigate its diffractive properties and present as one application its implementation as a surface structure, leading to an efficiency enhancement of 18% in an organic solar cell.